In figure two positive charges q ₂ and q₃ fixed along the y-axis, exert a net electric force in the + x- direction on a charge q₁ fixed along the x-axis. If a positive charge Q is added at (x, 0), the force on q₁

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(a)

shall increase along the positive x-axis

(b)

shall decrease along the positive x-axis

(c)

shall point along the negative x-axis

(d)

shall increase but the direction changes because of the intersection of Q with q₂ and q₃

A point positive charge is brought near an isolated conducting sphere (figure). The electric field is best given by

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(a)

(b)

(c)

(d)

A hemisphere is uniformly charged. The electric field at a point on a diameter away from the centre is directed

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(a)

perpendicular to the diameter

(b)

parallel to the diameter

(c)

at an angle tilted towards the diameter

(d)

at an angle tilted away from the diameter

A point charge + q is placed at a distance d from an isolated conducting plane. The field at a point P on the other side of the plane is

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(a)

directed perpendicular to the plane and away from the plane.

(b)

directed perpendicular to the plane but towards the plane

(c)

directed radially away from the point charge

(d)

directed radially towards the point charge

Figure shows electric field lines in which an electric dipole P is placed as shown. Which of the following statements is correct?

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(a)

The dipole will not experience any force.

(b)

The dipole will experience a force towards right.

(c)

The dipole will experience a force towards left.

(d)

The dipole will experience a force upwards.